2C+Solving+Equations

Sabrina Lebron Solving Equations When we write F(x) to mean the function whose input is x. F(x) is like saying Y= One can think of F as the function that inputs multiplies it by (x.)And may replace x if x has a number in the function it is given to you. EF -118 Example if F(x)=-2/3x-3 <- It is the same as saying Y=-2/3x-3

If they ask to solve x =3 and or F(3) Which means f of a variable (x)= - Fraction multiplied by (x) +or - a number.

1 First rewrite the problem replacing all the x values for 3. F(3)= -2/3(3) +3 Y=-2/3(3)-3 Then one must multiply -2/3 * 3. This will give one a negative 2 for an answer. F(3)= -2+3 Y=-2-3 F(3) =1 Y=1



The great thing about doing this is that it gives one both the values and or point. Thus people will not get confused on what is x in the end of the problem.

Another way to solve problem is using Distributive property

One usually uses distributive property when Factoring problems (y +12 ) (y+3)

One multiplies the y *y then y *3 Then 12*y Then 12 *3

y*Y=y^2 Add 12y +3y which equals 15y Then multiply 12*3 which equals 36

The ending product should look like:

y^2+15y +36

Naima Holland #10 FX-39 a. 18/32=x/18 x=10.125 b. 17/10=15/15-x 17(15-x)=150 =255-17x=150 -17x=405 x=-23.8 Problem Topic: Cross Multiplication. Notes: A method of simplifying an equation in order to solve it for a particular variable or unknown. Cross Multiplication also shows it in a form having fewer fractions.

There are many ways to solve problems these are just a few basic steps to understanding solving problems.